I used to believe that adults were purposely trying to kill me by regularly feeding me Peanut Butter and Jelly sandwiches. This belief stayed with me until I was an adult and learned I have multiple food allergies including Peanuts and several ingredients in Jelly.
A childhood belief about dangerous food

others believed things like this
- I used to believe that my mother invented peanut butter and jelly sandwiches. Anon
- I thought that barf was what they used to make peanut butter and jelly sandwiches!— Maan o' War
- I thought jelly fish were made out of fruit jelly. — Kevin
- I used to believe that jelly came from jellyfishAnon
- I used to think jelly came from jellyfish's tenticles— Rachey b
- I used to believe that if you didn't take your socks off at night your feet would turn into jellyAnon